The patch titled
kobject: kobj->k_name verification fix
has been added to the -mm tree. Its filename is
kobject-kobj-k_name-verification-fix.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: kobject: kobj->k_name verification fix
From: Martin Stoilov <mstoilov@xxxxxxxxxx>
The function 'kobject_add' tries to verify the name of
a new kobject instance is properly set before continuing.
if (!kobj->k_name)
kobj->k_name = kobj->name;
if (!kobj->k_name) {
pr_debug("kobject attempted to be registered with no name!\n");
WARN_ON(1);
return -EINVAL;
}
The statement:
if (!kobj->k_name) {
pr_debug("kobject attempted to be registered with no name!\n");
WARN_ON(1);
return -EINVAL;
}
is useless the way it is right now, because it can never be true. I
think the
code was intended to be:
if (!kobj->k_name)
kobj->k_name = kobj->name;
if (!*kobj->k_name) {
pr_debug("kobject attempted to be registered with no name!\n");
WARN_ON(1);
return -EINVAL;
}
because this would make sure the kobj->name buffer has something in it.
So the missing '*' is just a typo. Although, I would much prefer
expression like:
if (*kobj->k_name == '\0') {
pr_debug("kobject attempted to be registered with no name!\n");
WARN_ON(1);
return -EINVAL;
}
because this would've made the intention clear, in this patch I just restore
the missing '*' without changing the coding style of the function.
Signed-off-by: Martin Stoilov <mstoilov@xxxxxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
lib/kobject.c | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)
diff -puN lib/kobject.c~kobject-kobj-k_name-verification-fix lib/kobject.c
--- a/lib/kobject.c~kobject-kobj-k_name-verification-fix
+++ a/lib/kobject.c
@@ -211,7 +211,7 @@ int kobject_add(struct kobject * kobj)
return -ENOENT;
if (!kobj->k_name)
kobj->k_name = kobj->name;
- if (!kobj->k_name) {
+ if (!*kobj->k_name) {
pr_debug("kobject attempted to be registered with no name!\n");
WARN_ON(1);
return -EINVAL;
_
Patches currently in -mm which might be from mstoilov@xxxxxxxxxx are
kobject-kobj-k_name-verification-fix.patch
-
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